This year, Cassidy’s family took to social media to honor his birthday, sharing heartfelt tributes and memories that celebrate his life, talent and the impact he had on so many. Shaun Cassidy, who ...

Shirley was also married to David’s father Jack Cassidy in real life from 1956 to 1974, and in a touching tribute, the 83-year-old has shared what she will miss most about the late teen idol ...

Shaun Cassidy, who shared a father with David, posted a black-and-white photo on Instagram to recall the time they spent together as young children.